1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.spring.aop;
24  
25  import org.aopalliance.intercept.MethodInterceptor;
26  import org.aopalliance.intercept.MethodInvocation;
27  
28  /**
29   * <a href="BeanInterceptor.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   */
33  public class BeanInterceptor implements MethodInterceptor {
34  
35      public Object invoke(MethodInvocation invocation) throws Throwable {
36          Thread currentThread = Thread.currentThread();
37  
38          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
39  
40          try {
41              if ((_classLoader != null) &&
42                  (contextClassLoader != _classLoader)) {
43  
44                  currentThread.setContextClassLoader(_classLoader);
45              }
46  
47              return invocation.proceed();
48          }
49          catch (Throwable t) {
50              if (_exceptionSafe) {
51                  return null;
52              }
53              else {
54                  throw t;
55              }
56          }
57          finally {
58              if ((_classLoader != null) &&
59                  (contextClassLoader != _classLoader)) {
60  
61                  currentThread.setContextClassLoader(contextClassLoader);
62              }
63          }
64      }
65  
66      public void setClassLoader(ClassLoader classLoader) {
67          _classLoader = classLoader;
68      }
69  
70      public void setExceptionSafe(boolean exceptionSafe) {
71          _exceptionSafe = exceptionSafe;
72      }
73  
74      private ClassLoader _classLoader;
75      private boolean _exceptionSafe;
76  
77  }